Sure
On Sat 16 Mar, 2019, 4:59 PM Dima Pasechnik <dimp...@gmail.com wrote:
> Yes, this segfaults on all the graphs I tried on Linux, but works on MacOS.
>
> No idea why, please open a trac ticket on this.
>
> On Sat, Mar 16, 2019 at 8:52 AM rajat.mittal.mat15 via sage-devel
> <sage-devel@googlegroups.com> wrote:
> >
> > I have recently installed igraph using ./sage -i igraph and ./sage - i
> python_igraph
> > I also did sage build and ./sage -b
> >
> > But using it
> >
> > sage: G = graphs.RandomGNP(1000, .01)
> > sage: I = G.igraph_graph()
> > sage: %timeit I.pagerank()
> >
> > gives following error
> >
> > filename = 0x7ffc0bef5337
> "/home/rajat/new_version/sage-8.7.beta6/src/bin/sage-ipython"
> > module = 0x0
> > fp = 0x1b033f0
> > p = <optimized out>
> > unbuffered = 0
> > skipfirstline = 0
> > stdin_is_interactive = 1
> > help = <optimized out>
> > version = <optimized out>
> > saw_unbuffered_flag = <optimized out>
> > cf = {cf_flags = 0}
> > #78 0x00007ff538f15830 in __libc_start_main (main=0x4006f0 <main>,
> argc=3,
> > argv=0x7ffc0bef4708, init=<optimized out>, fini=<optimized out>,
> > rtld_fini=<optimized out>, stack_end=0x7ffc0bef46f8)
> > at ../csu/libc-start.c:291
> > result = <optimized out>
> > unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0,
> 164082578521821197,
> > 4196096, 140720508716800, 0, 0, -162438125174419443,
> > -167616841612554227}, mask_was_saved = 0}}, priv = {pad
> = {
> > 0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0,
> > canceltype = 0}}}
> > not_first_call = <optimized out>
> > #79 0x0000000000400729 in _start ()
> > No symbol table info available.
> >
> >
> > Cython backtrace
> > ----------------
> >
> > 29 ../sysdeps/unix/sysv/linux/waitpid.c: No such file or directory.
> > Traceback (most recent call last):
> > File "<string>", line 56, in <module>
> > File "/usr/lib/python3/dist-packages/Cython/Debugger/libcython.py",
> line 689, in invoke
> > for arg in string_to_argv(args):
> > TypeError: argument 1 must be str, not bytes
> > Saved trace to /home/rajat/.sage/crash_logs/crash_L9MmKW.log
> > ------------------------------------------------------------------------
> > Unhandled SIGSEGV: A segmentation fault occurred.
> > This probably occurred because a *compiled* module has a bug
> > in it and is not properly wrapped with sig_on(), sig_off().
> > Python will now terminate.
> > ------------------------------------------------------------------------
> > Segmentation fault (core dumped)
> >
> >
> > Detailed output s attached with
> >
> > other algorithms of igraph are working fine.
> > My OS is ubuntu 16.04.
> > But David using OSx reported this to be working fine and giving correct
> output.
> >
> > Note I am using sage-8.7.beta6 develop version.
> > Anyone have a clue why this is happening?
> >
> >
> > Thanks Rajat
> >
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